Bridge conditions in Harney County, Oregon
128 inventoried bridges · 2 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
The federal inventory lists 128 bridges in Harney County: 65 rated good, 61 fair, and 2 poor.
- 2 of the 128 bridges in Harney County, Oregon, are rated in poor condition (1.6%) in the 2025 National Bridge Inventory, as of .
- 65 bridges (50.8%) are rated good and 61 (47.7%) fair.
- The median Harney County bridge was built in 1985.
- The busiest poor-rated bridge is South Harney Road over Silver Creek (built 1975), carrying about 137 vehicles a day.
Good 50.8% · Fair 47.7% · Poor 1.6% of 128 bridges
Bridges rated poor
Every bridge in the county with a poor rating, busiest first. Poor means a major component is rated 4 or lower on FHWA's 0-9 scale; it is a repair flag, not a closure notice.
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| South Harney Road over Silver Creek | 1975 | 137 | Poor |
| 8244: Steens Mount over Kueny Creek | 1973 | 50 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 20 (hwy 007) over Silvies River | 1999 | 2,834 | Good |
| US 20 (hwy 007) over Willow Creek | 1993 | 2,792 | Fair |
| US 20 (hwy 007) over Poison Creek(susans Br) | 1966 | 2,332 | Good |
| US 20 (hwy 007) over Foley Slough | 1999 | 2,332 | Good |
| US 20 (hwy 007) over Silver Creek | 1956 | 2,325 | Fair |
| US 20 (hwy 007) over Miller Creek | 2004 | 2,325 | Good |
| US 20 (hwy 007) over Dry Creek | 2005 | 2,325 | Good |
| US 20 (hwy 007) over Silver Creek Irr Channel | 1988 | 2,077 | Good |
| Or 78 (hwy 442) over Silvies RIVER(3RD Br) | 1971 | 1,858 | Fair |
| Or 78 (hwy 442) over Silvies SLOUGH(4TH Br) | 1971 | 1,858 | Fair |
Source: FHWA National Bridge Inventory, 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.
All of Oregon: Oregon bridge conditions by county · every download on the data page.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.